How to Complete Containment Mission in Black Ops 7 Campaign (Complete Walkthrough)

Containment is the explosive finale to Call of Duty: Black Ops 7’s main campaign, sending Specter One deep into the Blackheart facility—an underwater Guild stronghold that’s far more than just an offshore mining rig. After putting down Razor in the previous mission, David Mason and his team discover that Kagan’s true operation lies beneath the waves, where bioreactors threaten global catastrophe.

This underwater showdown combines intense combat, puzzle-solving, and an epic boss battle against Kagan’s mechs. Here’s your complete guide to finishing the campaign with style and claiming the exclusive Grounded Operator skin.

Black Ops 7 Mission Overview: Containment Facts

Source: Call of Duty Official Site

Phase 1: Infiltrating Blackheart Facility

The mission begins cinematically as your squad arrives via submersible unit, descending into the eerie depths where the Blackheart facility operates. Your first task is straightforward but tense: search the area and navigate deeper into the underwater complex.

Key Tips for Infiltration:

• Move cautiously—this area swarms with Guild operatives
• Stealth isn’t mandatory, but taking enemies quietly preserves ammunition
• Follow waypoint markers through narrow corridors and industrial passages
• Watch for explosive containers you can trigger for area damage

As you progress through the facility’s twisting passages, your objective updates to disable the shipping lanes. This requires reaching control rooms positioned at opposite ends of a large cargo bay filled with enemy soldiers.

Phase 2: Disabling Shipping Operations

To disable the shipping lanes, you need to press buttons in control rooms on opposite ends of the facility’s cargo area, which is heavily populated with enemies. This is where tactical positioning matters most.

Strategy for Clearing the Bay:

1. Take high ground first – Climb to elevated platforms for better sightlines
2. Use cover-to-cover movement – The shipping containers provide excellent protection
3. Prioritize threats – Target enemies with explosives or heavy weapons first
4. Coordinate with teammates – In co-op, split up to reach both control rooms faster

After hitting both buttons, you’ll need to secure the area by eliminating remaining Guild forces. Once cleared, the next phase of sabotage begins.

For more Black Ops 7 campaign strategies and mission breakdowns, check out our complete campaign guide.

Phase 3: Sabotaging the Bioreactor

Your mission shifts to stopping the bioreactor from exploding by opening hatches to overload it. This multi-stage objective combines combat pressure with interactive puzzle elements.

Opening the Hatches

Kagan and her subordinates interfere during this process, requiring you to press the buttons two or three times to override her commands. Timing is crucial here—you’ll need to defend yourself while repeatedly interacting with the control panels.

Hatch Opening Tips:

• Clear nearby enemies before starting each interaction
• Have teammates watch your back during button presses
• Listen for Kagan’s dialogue—she announces when she’s blocking your progress
• Expect 2-3 override attempts per hatch

Raising the Bioreactor

After Kagan blocks the bioreactor from leaving the cooling chamber, you must manually raise it using wheels around the structure while hordes of enemies attack. This proves to be one of the mission’s most chaotic moments.

Survival Strategy:

• Rotate between wheel positions quickly
• Use area-of-effect killstreaks when overwhelmed
• Position one player on defense, one on wheels (co-op)
• Check your ammunition—this segment drains resources fast

Phase 4: Overloading Systems (Circuit Minigame)

The final sabotage step requires completing circuit minigames to increase bioreactor pressure while Kagan interferes and enemies swarm your position. Think of this as a high-pressure hacking sequence under fire.

Minigame Completion Tips:

• Focus on the puzzle first – Mistakes waste precious time
• Memorize patterns – The circuit layouts follow logical paths
• Resume quickly after interruptions – Kagan’s interference doesn’t reset progress
• Deploy defensive equipment – Trophy systems and sentries help tremendously

The minigame appears twice during this phase, with increasing complexity on the second attempt. Stay calm, work methodically, and you’ll overload the bioreactor successfully.

Explore our advanced combat tactics guide for weapon recommendations and loadout optimization throughout the campaign.

Phase 5: The Mech Boss Battle

After overloading the bioreactor, you must escape while Kagan deploys three tanky mechs that require significant firepower to destroy. This is Containment’s grand finale—a desperate fight against overwhelming mechanical force.

Defeating Kagan’s Mechs

Each mech appears sequentially, not simultaneously, giving you focused targets. However, they’re incredibly durable and deal devastating damage.

Boss Fight Strategy:

• Look for projectile launchers like ARC anti-vehicle weapons in supply crates scattered around the area
• Never waste assault rifle ammo – Save bullets for smaller enemies between mechs
• Evade melee attacks – The mechs have deadly close-range strikes
• Use the environment – Stay mobile and put obstacles between you and mech fire
• Target weak points – Aim for glowing components for bonus damage

The boss fight has three phases with each mech appearing one after another, so conserve ammunition and make every shot count. Patience wins this battle—rushing leads to elimination.

Final Escape Sequence

Once all mechs are disabled, you must reach the surface before the facility explodes by following markers through the collapsing structure. This is a straightforward sprint-to-safety sequence with minimal combat.

Escape Tips:

• Follow the yellow objective markers precisely
• Sprint constantly—there’s no penalty for speed here
• Jump over debris and collapsed structures
• Don’t stop to loot—everything’s about to blow

A cinematic concludes the campaign as the bioreactor is destroyed, Kagan prepares to face justice, and humanity is saved from the Guild’s plans. Congratulations—you’ve completed Black Ops 7’s campaign!

Rewards and What’s Next

Completing Containment rewards you with the exclusive Grounded Operator skin and 5,000 XP. More importantly, you’ve unlocked Endgame mode—Black Ops 7’s post-campaign content featuring higher-level challenges and unique boss encounters.

Post-Campaign Content:

• Endgame missions with increased difficulty and better loot
• Open-world Avalon for free exploration and side objectives
• Dr. Falkner boss fight on Cursed Rock (recommended combat rating: 45)
• Multiplayer progression enhanced by campaign completion bonuses

For strategies on tackling Endgame content and defeating Dr. Falkner, check our dedicated guides.

Common Challenges and Solutions

Problem: Running out of ammunition during mech fights

• Solution: Prioritize projectile weapons, conserve rifle ammo, coordinate team fire

Problem: Failing circuit minigames under pressure

• Solution: Practice the pattern once without enemies, then execute quickly

Problem: Getting overwhelmed during bioreactor raising

• Solution: Use chokepoints, deploy all available equipment, focus on staying alive over speed

Problem: Can’t find projectile launchers for mechs

• Solution: Check all supply crates methodically, they spawn in fixed locations near the escape route

FAQs